Guidelines for clearing ISTQB Certification Exam

Introduction  Pairwise or All pair testing technique is approach to test software using combinatorial method.It's a method to test all the possible discrete combinations of the parameters involved. This technique is an effective test case generation technique that is based on the observation that most faults are caused by interactions of at most two factors. Pairwise-generated test suites cover all combinations of two therefore are much smaller than exhaustive ones yet still very effective in finding defects. When to use Pairwise Test Method ? For example, consider the testing of a web application that has four features (factors) say OS, speed, browser types and anti-virus software and each of these factors has five values (options). In order to have a full coverage for the application, we need to test 5 x 5 x 5 x 5 = 625 combinations, which is not easily possible. We may test all these combinations, provided we have enough time and budget. However, what if we do not have eno...

In Test Analyst course, we get to study about number of Test design techniques. In this post I am going to talk about one of those Test design techniques " Classification Tree Method ". Tricks to easily solve the question in ISTQB exam by solving one of the sample question. Classification Tree Method is one of the black box test design technique which is mainly used to test combinations of features. Lets consider sample question from ISTQB Test Analyst syllabus Q: Easytravel is a card which is used for paying journeys on buses and undergrounds. The user can store credit to the card at the Easytravel Loading Machines and the system automatically deducts the fee of the journey while the user shows the card to the card reader on a bus or at the underground station. The system allows the user to load 10, 20, 30, 40, 50 Euros or another, user-defined amount to the card. There are four payment methods available: cash, credit card, debit card or pay-by-phone. After the transac...